I built a radio for work, it's basically a sony deck and some scosche walmart junk 5x7's. The deck advertises 52Wx4 channels, which I think is more like 20 watts RMS, 50W peak per channel. I'm only using 2 channels. Problem is, my workplace is so loud, even at max volume I can't really hear the music. I'm thinking of building a slightly larger box capable of holding a small (100w RMS 2 channel) amp, and upgrading speakers. They can't really be much bigger than 5x7, since the radio has to fit in a locker at the end of the day. Any suggestions on speaker/amp setups? Looking for something cheap too.
All of the parts need to be somewhat compact, meaning less than 8 inches wide and somewhat shallow, since the radio box is approximately 9 inches wide by 7 inches deep - barely enough to hold the head unit and run wires behind it.
There's about 10 pawn shops in my area, I may check them out this weekend.